文献类型：期刊文献

英文题名：Effects of attapulgite nanorods on mechanical and thermal performances of silicon-containing polyarylacetylene

作者：Zhan, Jiadong[1]; Yuan, Qiaolong[1]; Huangr, Farong[1]; Du, Lei[1]

机构：[1] Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2015

卷号：2015-July

外文期刊名：ICCM International Conferences on Composite Materials

收录：EI(收录号：20183705814652)

语种：英文

摘要：Rod-like attapulgite silicate particles (ATT) were introduced into a silicon-containing polyarylacetylene resin (PSA) in solution. ATT/PSA nanocomposites were prepared by sonication, evaporation and thermal polymerization. The effect of ATT nanorods on the curing reaction of PSA was studied by differential scanning calorimetry (DSC) and Fourier transform infrared (FTIR) in situ monitoring. The ATT/PSA dispersions and particle networks were characterized by rheological and microscopic measurements. The addition of ATT nanorods decreased the conversion of the external acetylenic groups in PSA. However, the ATT nanorods played a pseudo-catalytic role when the large amount of ATT was added. The percolated ATT particle networks were constructed in PSA when 10 wt% ATT nanorods were added in the mixture. The flexural property of the cured PSA decreased and then increased with the addition of ATT nanrods. The addition of 10% mass fractions of ATT nanorods in PSA matrix increased the flexural strength and modulus of the nanocomposite to 52 MPa and 49.9 GPa, respectively. The thermal stability of the cured ATT/PSA nanocomposits were determined by thermogravimetric analysis (TGA) in N2.The temperature at 5% mass loss (Td5) and the residual at 800 ℃ (Yc at 800 ℃) of the nanocomposites reached 604 ℃ and 92.7%, respectively, when the loading of ATT nanorods was 5% mass fractions. The nanoparticle networks reduced the cyclotrimerization in PSA resulting in more linear or branched structures. The crosslink density and structure of the nanocomposites affected the flexural property and thermal stability. ? 2015 International Committee on Composite Materials. All rights reserved.